您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 8    No. 1    March 1998

[PDF Download]    [Flash Online]

    

MEASUREMENT OF THERMODYNAMIC PROPERTIES OF LIQUID Al-Mg ALLOYS
Lu Guimin and Qiu Zhuxian

P. O. Box317, School of Materials Science and Metallurgy,Norhteastern University, Shenyang110006, P. R. China

Abstract:The activities of Mg element in liquid Al-Mg alloys were determined by electromotive force method in a cell made of BN crucible. The activities of Mg and Al as well as other thermodynamic properties were calculated from the measured EMF data. The results indicate that the Mg-concentration in the alloys at 1 073 K shows a negative deviation from Rault’s Law in the whole range of concentration. When XMg is≤0.55, the deviation is small; when XMg is >0.7, the deviation becomes large. When XMg is <0.126, the Mg concentration curve follows Henry’s Law, the Henry’s constant is 0.86. The behavior of Al is characterized by ideal solution in the range of 0≤XMg<0.8, which shows a positive deviation from Rault’s Law in the range of 0.58<XMg<0.8 and a negative deviation when XMg is >0.8.

 

Key words: Al-Mg alloys activity thermodynamic properties boron nitride

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn